311-75-1Relevant articles and documents
Bicyclo[1.1.1]pent-1-yl: A tertiary alkyl radical with enhanced reactivity
Banks, Jeffrey T.,Ingold, Keith U.,Della, Ernest W.,Walton, John C.
, p. 8059 - 8060 (1996)
Absolute rate constants for reactions of bicyclo[1.1.1]pent-1-yl radicals with α-methylstyrene (1.4 x 107 M-1s-1) and 1,4-cyclohexadiene (4.6 x 105 M-1s-1) at 25°C were measured by laser flash photolysis. This bridgehead radical is more reactive than tert-butyl which we attribute to its high s-character and the absence of steric shielding of the radical center.
Concerning the Synthesis of Propellane
Belzner, Johannes,Bunz, Uwe,Semmler, Klaus,Szeimies, Guenter,Opitz, Klaus,Schlueter, Arnulf-Dieter
, p. 397 - 400 (2007/10/02)
The reaction of 1,1-dibromo-2,2-bis(chloromethyl)cyclopropane (2) with methyllithium in ether led to a solution of propellane (1) in a yield of 70percent. 1 could also be prepared free of solvent by reaction of 2 with lithium powder in triglyme/n-decane at 73 deg C. - Keywords: Cyclopropa annulation/ Propellane/ Polycycles, strained